| 摘要 |
<p>This Patent covers a method and the related equipment to measure exactly the flow rate in sewer systems. By using a basin (1) receiving the waste water from the sewer duct (2) and emptied at intervals by one or more pumps (3) it will be possible to measure the sewage flow (or volume) by establishing a maximum and a minimum level in the sewage basin (Q1 and Q2 respectively) while determining the time required to fill the tank between the two levels. Based upon the filling time, it will be possible to measure, with the aid of a computer, all data needed to determine the instantaneous, the average hourly and daily rates, minimum and maximum peak rates etc. Floats or sensors are (4, 5) positioned at these two levels (Q1, Q2) which will start or stop the drain pumps while transmitting the measuring time to the computer, i.e. the time required between stopping and restarting of the pumps.</p> |
